Engine Control System (Service Information): Overview Toyota Yaris III

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1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
2. REMOVE ENGINE UNDER COVER RH
3. REMOVE CYLINDER HEAD COVER NO. 2 See step 2
4. REMOVE FAN AND GENERATOR V BELT. Refer to «REMOVAL - Step 2»(ref-472632-S38391431302012051500000)
5. REMOVE FAN BELT ADJUSTING BAR Remove the bolt and nut and remove the fan belt adjusting bar.
6. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Disconnect the camshaft timing oil control valve assembly connector. Remove the bolt and nut and remove the camshaft timing oil control valve assembly. Remove the O-ring from the camshaft timing oil control valve assembly.

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1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Check the resistance. Measure the resistance between the terminals. Standard resistance 6.9 to 7.9 ohms at 20 °C (68°F) If the result is not as specified, replace the oil control valve assembly. Check the operation. Connect the positive (+) battery lead to terminal 1 and the negative (-) lead to terminal 2, and check the movement of the valve. Standard Condition Specified Condition Battery positive (+) voltage applied Valve moves to the left as shown in the illustration Battery positive (+) voltage cut off Valve moves to the right as shown in the illustration If the result is not as specified, replace the oil control valve. NOTE: If the valve does not return properly because of foreign matter intrusion, a small amount of leakage in the advanced direction may occur and a DTC may be output.

See also:
• ON-VEHICLE INSPECTION - Step 1
• ON-VEHICLE INSPECTION - Step 1
• REMOVAL